Home / 3,313.78-4,572.90-1,986.70

Finding the Fourth Proportional to 3,313.78, 4,572.90 and 1,986.70

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Solution

The fourth proportional to 3,313.78, 4,572.90 and 1,986.70 is: 2,741.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,313.78 : 4,572.90 = 1,986.70 : x
  2. Step 2: Convert to fraction form
    3,313.78/4,572.90 = 1,986.70/x
  3. Step 3: Cross multiply
    3,313.78x = 4,572.90 × 1,986.70
  4. Step 4: Simplify right side
    3,313.78x = 9,084,980.43
  5. Step 5: Solve for x
    x = 9,084,980.43/3,313.78
  6. Step 6: Final answer
    x = 2,741.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.